Waterproof fabric.



NQ-'819,450- PATENTED MAY 1, 1906.

I. 0. OVERBURY.

WATERPROOF FABRIC. APPLIOATION FILED MAY 26. 1905 mum I llwullllLiiiiiiiiilllng mm| iililllll HI limm h Iii W m Zj lllilllg U UNITEDSTATES PATENT OFFICE.

FREDERICK o. OVERBURY, F NEW'YORK, N. Y.. ASSIGNOR TO FLINTKOTE'MANUFACTURING COMPANY, OF RUTHERFORD, NEW JERSEY,'A COR-- PORATION OF.NEVV- JERSEY.

WATERPROOF FABRIC.

I Specification of Letters Patent. s Application filed May 26,1905.Serial raaezaze.

' ratenta ma 1, 1906.

To all 'whom'itmizty concern: I 1 Be itknown that I, FREDERICK O. OVER-BURY, of New York, in the county of New York and State of New York, haveinvented certain new and useful Im rovements in Waterproofing Fabrics,of whlch the follow ing is a specification.

This invention has relation to waterprooffabrics for buildings and otherpurposes. eretofore waterproofin fabrics of the general class to whichthis invention relates have been made by saturating a layer or body ofwool felt or other suitable fabric in a suitable water roofing material,such as asphaltum, tar, pitch, or'any other hydrocarbon bodythat it wasseen fit to employ. After such saturation in order to provide the fabmewith acoating it has been customary to pass the fabric through a mass ofwaterproofmg substance, so that both faces 'of the fabric became coatedwith a relatively thick layer of the water roofing material. In the useof waterproo g fabrics of this general character it has been thepractice to coat the wall to be covered with a heated cement such asasphaltum, tar, pitch, or any'other suitable hydrocarbon bodyand to thencover the coated wall with a layer ofthe waterproofing material asheretofore constructed terproofing material, and then coat eachsucceeding layer with the cement to bind the layers together.

Experience has demonstrated that the wahas had several disadvantages. Inthe first place the coating of the more or less sticky hydrocarbonmaterial on both faces of the fabric renders it difiicult to ship thefabric in rolls for the reason that the. superimposed convolutions areapt to stick together to'such an extent as to render it impossible tounroll the fabric after it has reached its destination. It has beenattempted to obviate this difliculty by covering one or both faces withtalc or-soapstone or "some other dry powder; .but this, is detrimentalin that m the subsequent use of the waterproofing fabric the ce-.

ment'does not readily adhere to the talccovered surface. waterproofingmaterial has not been coated with talc I have found that it is verydifli cult to cause-layers of the material to adhere,

for the reason that the imposition of one coated surface upon anothercoated surface Furthermore, even where the.

with an intermediate layer of cement does not result in afirm adherenceof the two layers. with the cement by the aid of a brush, (thecementusually being employed while hot,). the cement adheres to the surfacewhich it covers; but before the next layer is laid upon it it becomesmore or less chilled and does not adhere to the coated face of thesuperimposed layer. ment is used. I account for it by the fact that-thecoated face of the waterproofing material prevents the cement fromreaching the fibers or interstices in the felt or fabric, so

that. there is no firm adherence between-the cement and theWaterproofing material. Fur

thermore, when the superimposed layer of fabric is placed upon thecement-covered face of thefirst layer of the material thereis more orless air between them and the cement is not spread and wiped upon theface of the superimposed layer as it is upon the first or under layer. Iobviate these difficulties by constructing the waterproofing material inthe following manner: v I

. I first saturate a body or layer of wool felt, fabric, paper, or otherfabric that is to be used with Waterproofing substancesuch as asphaltum,pitch, tar, or other hydrocarbonso that when it is driedits faces arenotsticky, but are dry. Then I coat only one of the faces with a layerof waterproofing substance such as referred to, so that there is arelatively thick coating thereof upon it which has a shiny, smooth, moreor less sticky surface, leav ng the other face with a more or less roughsurface that is not sticky. As a result of this a length of thismaterial may be rolled, in which case the'coated face comes into contactwith the uncoated face and does not adhere thereto. Again, by leavingthe one face uncoated it readily adheres to the cement with which thecoated face is treated when the material is built u Onthe drawings,Figure 1 re resents a wall to'whichlayers of the materia are being ap-Ico When the coated'surface is covered.

This occurs even when coldce- 1 put in place or being.

plied. Fig. 2 represents-a section through a r strip. of fabric. Fi 3represents conven tionally instruments. 'ties by which the waterprooffabric may be produced.

The same reference characters indicate the 10 5 same parts in all thefigures. 1

On the drawings in Fi 2 I have illustrated an enlarged section of t efinished fabric, in which a 1s the saturated body of the fabric, and a/the coating of waterproofing material. This finished fabric may beproduced by an aprliaaratus such as conventionlly illustrated in ig. 3,in which the roll of fabric is indi cated at b. The fabric is drawnthrough a saturating-vat c, throu h driers d (if desired) to a coatingdevice e. vice the fabric is not submerged in the liquid Waterproofingmaterial, but is coated therewith only on the under face, so as to leavethe upper face dry and comparatively rough. After being dried thematerlal is wound upon a roll f. Of course any other suitableinstrumentalitiesmay be employed in lieu of those referred to; V

In the use of the finished fabric the wall to be covered thereby, suchas that indicated at m in Fig. 1, is first covered with a coating ofcement n by the aid of a brush or otherwise, and upon the coating islaid the rough face of a layer of waterproofing material 0. The layer ispressed firmly against the wall, the

I smooth, shiny, and more or less stick face of the layer beingoutermost. The wa l is coveredwith one layer of the fabric by placingstrips thereof side. by side. Then the exn the last-named deposed faceof the first layer is coated with cement and the rough uncoated face ofa second layer is placed thereon, so as to break joint therewith, andthen a third layer, and so on until the desired number is reached.

The cement is preferably used while heated and is preferably asphaltum;but some other cement may be utilized, and, if desired, in a cold state.

Having thus explained the nature of the invention and described a wa ofconstructing and using the same, alt ough without attempting to setforth all of the forms in which it may be made or all of the modes ofits use, I declare that what I claim is As a new article of manufacture,a waterproof material consisting of a fibrous body saturated with ahydrocarbon waterproofing substance and having one surface substantiallynon-adhesive, the other surface being coated with an adhesivehydrocarbon waterproofing substance.

In testimony whereof I have afiiXed my signature in presence of twowitnesses.

FREDERICK C. OVERBURY.

Witnesses:

BENJAMIN A. MORTON, GEORGE A. LITTLEJOHN.

